diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..44a6263
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.0.1] - 2025-07-01
+
+### Added
+- cut initial version
+- readme etc.
+- add basic worker pool
diff --git a/Cargo.toml b/Cargo.toml
index 69b693e..89f83f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ members = ["crates/*"]
 resolver = "2"
 
 [workspace.package]
-version = "0.1.0"
+version = "0.0.1"
 
 [workspace.dependencies]
 noworkers = { path = "crates/noworkers" }